Typewriting machine



Sept. 1, 1925. I 1,551,919

7 J. WALDHEIM TYPEWRITING momma Original Filed Sept. 29. 1921 5 Sheets-Sheet 1 lnvenfar:

J. WALDHEIM TYPEWRITING uuwnmn Sept 1, 1925.

Original- Filed Sept. 29. 11921 5 Sheets-Sheet 2 In ven for Affarrfey 5 Sheets-Sheet 5 Sept, 1, 1925.

- J WALDHEIM TYPEWRITING MACHINE Original Filed S ept. 29. 1921 /n venfar Affm-m Sept. 1, .925. 7 1,551,919

J. WALDHEIM TYPEWRITING mamas I Original, Filed Sept, 29. 1921 5 Sheets-Sheet 4 mvenfor:

firm/na Patented Sept. 1, 1925.

1 UNITED STATES JOHN VJALDHEIM, OE ELIZABETH, NEliV JERSEY, ASSIGNOR TO UNDERWOOD TYPE-' PATENT oFFics.

WRITER COMPANY, or new YORK, 1v. A oonronarron or DELAWARE.

TYPEVJRITING MACHINE.

Application filed September 29, 1921, Eierial No. 504,062. Renewed October 8, 1923.

T all 107mm it may concern.

Be it known that I, J OHN l VALDHEIM, a citizen of the United States, residing in Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Typewriting Machines, of which the following is a specification.

This invention relates to sound-deadening devices for combined typewriting and computingmachines, and is herein illustrated as applied to the type of machine disclosed in the patent to Hart, No. 1,270,411, dated June 25, 1918.

For deadening the sounds arising in the operation of the machine, this invention provides a sound-deadening cabinet which completely encloses the noise-producing parts of the machine while permitting ready access thereto. For this purpose, the sound-deadening cabinet may comprise two sections in the form of a main casing to be applied to the upper or typewriter portionof the machine, and an auxiliary casing for the lower portion of the machine. Slots and openings are provided in the cabinet for permitting various operating mechanisms, such as levers, keys, and other devices, to project outside of the cabinet, so that they may be op.- erated without necessitating removal of any part of the casing, sound-deadening means being provided for closing the slots and openings to prevent escape of sound therethrough.

It is a feature of this invention to provide means whereby one of the casings of said cabinet may be applied to the machine and positioned relatively thereto, and means whereby the other of said casings may be positioned relatively to said first casing.

Another feature is the construction of the parts of the cabinet in such manner as to permit it to be readily applied to or removed from the machine. 7

A further feature is the provision of vari-' ous removable sections on the casings to allow access to various portions of the machine without removing the casings.

it further feature is the provision of a sound-deadening lining for the computer case or portion to prevent transmission of sound vibrations therethrough and to provide closures for openings in the case,

through which openings various operating devices extend to the outside of the casing.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a perspective view of the sound-deadening cabinet applied to an Underwood bookkeeping machine.

Figure 2 is a side view thereof.

Figure 3 is a front elevation, partly sectioned, of the device shown in Figure 1.

Figure 4 is a side view, vertically sectioned, of the device shown in Figure 1.

Figure 5 is a plan view, with parts broken away, of the auxiliary casing applied to the lower portion of the machine, the typewriter portion of the machine, which is arranged above the computer portion, having been removed. i

The Underwood standard bookeeping machine, to which the sounddeadening cabinet is applied, may be of the general type disclosed in said patent to Hart, No. 1,270,- 411, and comprises a typewriterframe 10 mounted upon a connoutencase 11, a base 12 upon which said case is mounted, and various operating mechanisms, such as a driving motor 15 and clutch 16 suspended beneath said base, said frame and case being suitably mounted, preferably by lugs 17 fixed to the base, upon a stand 20 which may be of the type disclosed in the patent to Hart, No. 1,068,878, dated June 3, 1913.

The typewriter-frame comprises'a forward,

extension 21, in which are positioned alphabet-keys 22 and numeral-keys 23, as in the Underwood standard typewriting machine. The numeral-keys and alphabet-keys operate typebars 24: to cause types 25 carried thereby to print against the platen 26 forming part of a carriage 27 'mounted for letter-feeding movement upon a front rail 28 and a rear rail 29 on the typewritenframe 10. A space is formed between the type writer portion and the computer-case, in which space operate denominational tabulator keys 30, subtract key 31, and the non compute key 32 in a guide-plate 33 which closes said space at the front.

The carriage is provided with selecting dogs which, upon enteringa computing zone, are lifted by a cam-roller 36 into effective relation with jacks 37, the travel of the carriage to the left bringing said dogs into successive engagement with the jacks to lift each successive jack. The raisingyof' each jack thrusts forwardly a corresponding computing bar 34; within the computer-case through the action of a thrust-bar within the casing 38, a lever 39and atranspositlon linkage 40, whereby the computingbars will be operated forwardly from left to right in the order in which the numerals are typed, although the jacks are raised successively from-right to'left, the transposition linkages operating bell-cranks 411 connected with said computing bars; When the computing bars are moved forwardly, indexing pins 42 carried by said computing bars, and corresponding to the numerals from 1 to 9, are brought intooperative position directly beneath pin-settingbars 43 operated by the numeral-keys and normally positioned forwardly of pins 42. Themeans-for operating said pin-setting bars by the numeral keys comprises a stem 46 carriedby each numeralkey, said stem operating a rock-shaft 4:7 through an arm 48 fixed to the rock-shaft, each pimsett'ing bar being operated by its own rock-shaft, and each rock-shaft being operated by one of the numeral-keys. Operation of a numeral-key, when the carriage is in a computing zone, thus operates a pinsetting bar todepress the properpin on thedenominational thrust-bar which is then in forward position. lVhen a number which is to be run into a computing register has been fully typed, and the pins have been set on the computing bars of proper denominations, said number may be run into the register 50 at thefront of the computer case by operating the computing bars forwardly through distances corresponding to the values of the depressed pins.

F or driving the computing bars forwardly, there is provided a general operator 51 which may be of the type disclosed in the patent to- Hanson, No. 1,278,812, dated September 10, 1918, andcomprises a crossbar or engaging portion 52, which may be moved forwardly to engage the lower ends of the set of depressed indexing pins, to drive the computing bars forwardly dis tances corresponding to the values of the depressed pins.

The computing bars 341 are provided at their forward ends with racks 53 meshing with pinions (not shown) associated with the dial-wheels 55 to rotate the latter through distances proportional to the movement of the computing bars; the numerals on the peripheries of the dial-wheels being readable through a sight-opening 56 in a front cover-plate 57 of the computer-case, the front cover-plate 57 forming a continuation of the guide-plate'33.

The general operator may be actuated by handle 59 on a rock-shaft 60, the rock- No. 1,283,360, dated October 29, 1918,-af-t er" the last digit is written in the column. To

start the motor manually, there is provided a key 67, which may be depressed against 3 the tension of a return-spring (not shown) to operate a rearwardly-extendmglever 68, to depress the outer endof a horizontallydisposed lever 69 extending inwardly from the side of the machine, to raise the inner end of said lever, said inner end being ef-' fective to actuate a trip-pin 70 to start the motor and render the clutch 16 effective.

The clutch-mechanism and the motorswitch-o-perating mechanism may be like that disclosed in the patent to Vood,-No. 1,299,646, dated April 23,1919, in which the renderingof the clutch effective reciprocates an arm or projection 71 engaging a fork 72 secured to one of the guide-bars 6 1' of the general operator 51. Thus, it will be seen that, when the motor makes a revolution, the general operator is reciprocated, or, in other words, is caused to make a cycle, the forward stroke of the general operator being effective to drive the computing bars to run in the indexed number, the rearward stroke of the general operator being effective to restore the computing bars to their normal positions; the computing bars being provided for this purpose with projections 73 which are engaged by the cross-bar 52 of the general operator on its return stroke. The indexing pins 12 are restored by pinrest'oring mechanism including a platform which is actuable by the general operator during the latter part of its return stroke, as shown in the above-mentioned Hanson patent.

VJhen the cycle is completed, the circuit through the motor is broken and the clutch rendered ineffective, as is disclosed in said patent to lVood.

It will be understood that, when the general operator is to be reciprocated by the operating handle 59, the motor-drive may be disconnected by lowering the projection 71 of the clutch-mechanism out of engagement with the fork 72 on the guide-bar of the general operator, as disclosed in the patent to Hard-No. 1,212,895, dated January 16, 1917. For this purpose, there is provided a clutch-device 75 in the form of a belLcrank, one arm 76 of which supports the clutch-mechanism-case, and the other end 77 of which is swingable to rotate said case about the motor-shaft. By rotating the clutch-device, the clutch-mechanism-case is swung about the motor-shaft, to bring the projection 71 out of engagement with the fork.

The machine may be provided with a key 79 which, when depressed, serves to' start the motor and render effective a clutch 80, so that said motor operates a belt-and-pulley system 81 to rotate a pinion 82 which meshes with a rack 83 on the carriage to return the carriage to starting position. The details of the carriage-return mechanism may be as shown in the patent to Hart, No. 1,238,- 908, dated September 4, 1917.

To deaden the sounds arising in the operation of the machine, there is provided a cabinet which completely encloses the noiseproducing parts of the machine, while permitting the ordinary operations of the machine to be carried on without removing the casing, and giving ready access to the machine when desired. For this purpose, the cabinet consists of a main casing 85 to enclose the typewriter portion and a portion of the computer-case, and an auxiliary casing 86 to enclose the mechanism below the computer-case.

The auxiliary casing comprises a bodypart 87 and a cover-part 88, the latter being provided with an opening large enough to receive the computer-case and permit passage therethrough of mechanisms, such as the lever-enclosing casing 38, at the rear of the machine, and the carriage-return belts 81 which extend from below the computer case upwardly to the typewriter portion. The cover-part 88 may be of a single piece which is slid downwardly over the typewriter portion until it rests upon the supporting lugs 17 which pass through cut-out portions 89 therein; or, if desired, it may be formed of two pieces 90, 91, which are slid upon the machine from the front and rear, as shown, or from two sides. The two portions of the cover-part may be fastened together in any suitable manner, as by overlapping sides 92, 93, through which screws 94 may be passed (see Figure 5). The mechanism beneath the computer-case is effectively enclosed by applying the body-part to the cover-part. Said body-part is preferably curved to enclose the mechanism below the computer-case within a minimum amount of space, and is of such size that it may be slid rearwardly into stand 20, which is open from front to rear, and then raised slightly until its upper edges 95 overlap the lower edges 96 of the cover-part (Figure 1), to which it may be fastened, as by screws 97. To allow ready access to the mechanism within the auxiliary casing, the body-part thereof may be provided with removable sections, such as a back plate 98 and side plates 99, said plates overlapping the other portions of the body-part, to which they may be fastened, as by screws. To permit the clutch-device 7 5 to be operated from outside the casing, a slot is provided in the body-part and preferably in one of the removable sections 99 to give access to said, clutch mechanism, through whichsaid de vice extends, said slot being closed by sounddeadening cushions 100, 101 fixed on either side thereof. The conductor 102, which supplies current for the motor, passes through the casing, the opening thus formed being closed preferably by a plate 103. The entire auxiliary casing may be lined with sounddeadening material 105, thus preventing transmission of sound vibrations therethrough. The auxiliary casing may be positioned upon the machine by means of the cut-out portions 89 through which the supporting lugs extend, and, more accurately, by abutments 110 which may be of sounddeadening material fixed to the interior of. the casing, and which contact at the front, sides, and rear with the base 12 which supports the typewriter portion and the computer-case, the abutments at the rear being mounted preferably on depending brackets 111 fixed to the cover-part 88. The main casing is mounted upon the auxiliary casing, and may be positioned relatively thereto as by devices which may be in the form of lugs or hooks 112fixed to the auxiliary casing and engaging flanges 113 at the base of the main casing, said flanges serving to support the main casing upon the auxiliary casing.

The main casing comprises a body-part 115 and a cover-part 116 hinged at the rear to said body-part, said body-parthaving a large front opening permitting the passage of the typewriter portion and computer-case therethrough. The body-part terminates at the front adjacent-the front of the typewriter-frame, the forward extension 21 and the forward portion of' the computer-case extending forwardly from the main casing. For closing the front opening, there is provided a removable front plate 117 mounted upon the body-part. The latter conforms closely to the typewriting machine and the computer-case near the base, but flares outwardly and upwardly at the sides to form lateral extensions in which the typewritercarriage may operate to the right and left. To allow access to the mechanism at the rear of the typewriter portion, the body-part may be provided with a removable back plate 120.

To enclose the typewriter portion at the top, there is provided the cover-part 116 hinged to the body-part at 121, said coverpart comprising side walls 122 co-operating with and overlapping the extreme sides of the body-part extensions, and a ceiling 123 which slopes downwardly and forwardly,

and'in which is positioned a window 124 for permitting the machine and the typing in the interior of the casing to be viewed. Said ceiling terminates in a short front wall 125 some distance above the top of front plate 117 to form a slot, through which extend, from the carriage, the various operating handles, such as the line-space handle 126, the carriage-return finger-piece 127, and the carriage-release lever 128, so that said carriage may be operated from outside of the casing. For closing all of the slot not occupied by the carriageoperating levers, there may be provided co-operating sounddeadening cushions 129, 130 mounted on the front wall and front plate, respectively.

WVith the main casing and auxiliary casing in position on the machine, it will be apparent that the machine is completely enclosed, with the exception of the forward extension and the forward portion of the computer-case. The exposure of these portions gives access to the typewriter-keys 22 and 23, the tabulator keys 30, the subtract key 31, the non-compute key 32, the usual error keys 132 and star keys 133, the registers visible through a window 135, the handle 59 for operating the general operator, the key 79 for operating the automatic carriage-return, and the key 67 for starting the motor. In addition, there are also exposed the handles projecting from the carriage and the device for operating the clutch to effective and ineffective positions. It will thus be seen that all of the ordinary operations of the machine can be carried out with out removing the main casing or the auxiliary casing. The openings, through which extend the various carriage-operating handles, the device for controlling the position of the clutch, and the conductor supplying current to the motor, are closed to prevent escape of sound thereth'rough in the manner hereinbefore described. The portion of the computer-case which extends outside of the main casing and auxiliary casing may be lined with sound-deadening material 136 (Figure 4), through which extend the rious keys and levers at the front of the computer-case enumerated above. The lining of the computer-case may be extended upwardly, the upper extension 137 reaching guide-plate 140 in which operate the typewriter key-levers, and being provided with slits in which the tabulator key-levers operate. The portion of the front plate above the keys 23 may also be lined with sounddeadening material 141. It will thus be apparent that substantially every outlet from the main casing, auxiliary casing, and computer-case is closed against the escape of sound.

The machine may be provided with a sign 143 for indicating the state of the machine with respect to addition or subtraction, as disclosed in the patent to Kupetz, No. 1,356,072, dated October 19, 1920. To render this sign visible when the cabinet is in position on the machine, the main casing may be provided with a cut-out portion or window 144, which is: independent of the. window 124 and is located below it and in the body-part 115 of the main casing.

No claim is made herein for any feature that is disclosed. in the application of G.

The cover 116 of the casing for the typewriter section may be raised by means of afinger-piece 150 on said cover. The front wall 125 of the cover is provided with abutments 151 to engage the upper edge of the releasable plate 117, so that the latter may support the cover at the front. 7

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim: 1. The combination with a combined typewriting and computing machine having a typewriter with a keyboard, a computer,

computer-operating mechanism under said computer, and a support on which said computer rests and below which said mechanism is supported, of sound-deadening means comprising a lower casing having a top surrounding the base of the computer and overlying said support to be supported thereby and a bottom beneath said mecha nism and connected with said top, and an upper casing comprising a body having back and side walls resting on the top of the lower casing and enclosing the rear and sides of the typewriter and the computer, a front wall to close the front of the body around the keyboard and the front part of the computer and resting on the top of the lower casing, and a cover hinged to the body at the rear to close said body when in lowered position.

2. The combination with a combined typewriting and computing machine comprising a typewriter and a computer having a case on which said typewriter rests and extending to the front of the typewriter to expose a register of the computer, a stand having a top to support the computer case, and computer-operating mechanism supported by said stand beneath its top, of sound-deadening means comprising a lower sound-deadening casing for said operating mechanism supported by the edges of the stand around the computer case, and an upper sounddeadening casing comprising a body to rest on the upper part of the lower casing and having a back wall, side walls and a front plate through which projects the keyboard of the typewriter and the front portion of the computer case, and a cover for said body.

3. A sound-deadening cabinet for a ma chine comprising 'a typewriter, a computer supporting the typewriter and controlled thereby, and computer-operating mechanisms beneath said computer, said cabinet comprising a main casing for said typewriter and computer, and an auxiliary casing for said mechanisms beneath said computer, said main casing resting upon said auxiliary casing.

4. A sound-deadening cabinet for a ma chine comprising a typewriter, a computer beneath the typewriter and controlled thereby, and computer-operating mechanisms beneath said computer, said cabinet comprising a main casing for said typewriter and computer, an auxiliary casing for said mechanisms beneath said computer, said auxiliary casing being formed in sections, so that it may easily be assembled around the base of the computer, and means for supporting said auxiliary casing upon said machine, said main casing resting upon said auxiliary casing.

5, The combination with a combined typewriting and computing machine comprising.

a typewriter and a computer having a case on which said typewriter rests and extending to the front of the typewriter to expose a register of the computer, a stand having a top to support the computer case, and computer-operating mechanism supported by said stand beneath its top, of sound-deadening means comprising a lower sound-deadening casing for said operating mechanism supported by the edges of the stand around the computer case, and an upper sound-deadening casing comprising a body to rest on the upper part of the lower casing and having a back wall, side walls and a front plate through which projects the keyboard of the typewriter and the. front portion of the com puter case, a cover for said body, and a sound-deadening lining for the front part of the computer case.

6. The combination with a combined typewriting and computing machine comprising a typewriter having a forward extension with key-levers therein and a computer having a case on which said typewriter rests and extending to the front of the typewriter to expose a register of the computer, a stand having a top to support the computer case, and computer-operating mechanism sup ported by said stand beneath its top, of sound-deadening means comprising a lower sound-deadening casing for said operating mechanism supported by the edges of the stand around the computer case, and an upper sound-deadening casing comprising a body to rest on the upper part of the lower casing and having a back wall, side walls and a front plate through which projects the keyboard of the typewriter and the front portion of the computer case, a cover for said body, a sound-deadening lining for the front part of the computer case, and a sheet of sound-deadening material projecting up wardly from the top of the computer towards the key-1evers to prevent the escape of sound beneath the key-levers.

7. A sound-deadening cabinet for a machine comprising a typewriter, a typewritercontrolled computer beneath the typewriter, a stand on which said computer rests, a computer-operating motor-device beneath the computer, and a downwardly-extending handle for controlling the connection between the motor-device and the computer, said cabinet comprising a casing enclosing the motor-device and comprising an upper part having an opening to permit the passage of the computer therethrough, and a lower part connected with the lower edge of the upper part and having a slot to receive said handle when the lower part is placed beneath the upper part and lifted into engagement therewith.

8. A sound-deadening cabinet for a machine comprising a typewriter, a typewritercontrolled computer beneath the typewriter, a stand on which said computer rests, a compater-operating motor-device beneath the computer, and a downwardly-extending handle for controlling the connection between the motor-device and the computer, said cabinet comprising a casing enclosing the motor-device and comprising an upper part having an opening to permit the passage of the computer therethrough, a lower part connected with the lower edge of the upper part and having an opening to give access to said motor-device, and a cover for said opening having a slot therein to receive said handle.

9. A sound-deadening cabinet for a machine comprising a typewriter, a typewritercontrolled computer beneath the typewriter, a stand on which said computer rests, a computer-operating motor device beneath the computer, and a downwardly-extending handle for controlling the connection be tween the motor-device and the computer, said cabinet comprising a casing enclosing the motor-device and comprising an upper part having an opening to permit the passage of the computer t-herethrough, a lower part connected with the lower edge of the upper part and having anopening to give access to said motor-device, a cover for said opening having a slot therein to receive said handle, and inwardly extending flexible lips on the cover at each side of the slot to seal the slot around the handle.

10. A sound-deadening assemblageffor a machine comprising a typewriter having a keyboard, a typewriter-controlled computer beneath the typewriter and having a case with a register extending beyond the front of the typewriter, and operating members extending through slots in the ceiling of the case and at the front thereof, said assemblage comprising a cabinet enclosing said machine around the keyboard andthe register, and a layer of sound-deadening material lining the front wall 01 the computer case and a portion of the ceiling thereof outside of said cabinet, the layer of sounddeadening material serving to prevent the escape of sound through said slots.

11. A sound-deadening assemblage for a machine comprisng a typewriter having a keyboard, a typewriter-controlled computer beneath the typewriter and having a case with a register extending beyond the front of the typewriter, and operating members extending through slots in the ceiling or the case and at the front thereof, said'assemblage comprising a cabinet enclosing said machine around the keyboard and the register,- a layer of sound-deadening material lining; the front wall of the computer case and a portion of the ceiling thereof outside of said cabineh the layer of sound-deadening material serving to pre vent the escape oi? sound through said slots, and a layer of sound-deadening material extending upwardly from the soundmleadvenmg' material in the ceiling of the computer case into the typewriter at the rear of the keyboard. I I I V 12. A soundleadenmg cabinet for a machine comprising a typewriter, a computer beneath the typewriter and controllable thereby, and computer-operating mechanisms beneath said computer, said cabinet comprising a main casing for said typewriter and computer, an auxiliary casing for said mechanisms, said main. casing resting upon said auxiliary casing, and means for positioning said casings with respect to the machine;

A sound-deadening cabinet for a machine comprising atypewriter, a computer beneath the typewriter and, controllable thereby, and computer-operating 'mechanisms beneath said computer, said cabinet comprising a main casing for said typewriter and' computer, an auxiliary casing for said mechanisms, said main casing resting upon said auxiliary casing, means for positioning one of said casings with respect to the machine, and means for positioning the other of said casings with respect to the first casing.

14. A: sound-deadening cabinet for a machine comprising typewriter, a computer beneath'said computer, and supporting ln is beneath the typewriter and controllable thereby, and computer-operating mechanisms beneath said: computer, said cabinet comprising a main casing for said typewriter and computer, an auxiliary casing for said mechanisms, said main easing resting upon said auxiliary casing, means for positioning said casings with respect to the machine, and -means for positioning the main casing with respect to the auxiliary casing.

15. A sound-deadening cabinet for a machine comprising a typewriter, a computer beneath the typewriter and controllable thereby, and computer-operating mecha nisms beneath said computer, said cabinet comprising a main casing for said typewriter and computer, an auxiliary casing for said mechanisms, said main casing resting upon said auxiliary casing, means for positioning said auxiliary casing with respect to the machine, comprising abutments carried by said auxiliary casing and engag ing said machine, and means for positioning said main casing with respect to the auxiliary casing.

16. rbsound-deadening cabinet for a machine comprising a typewriter, a computer beneath the typewriter and controllable thereby, and computer operating mechanisms beneath said computer, said cabinet comprising a main casing for said type writer and computer au auxiliary casing for said mechanisms, said main casing restingupon said auxiliary casing, means for positioning said auxiliary casing with respect to the machine, and means for positioning said main casing with respect to the auxiliary casing, said last named means comprising hooks on said auxiliary casing for engaging said main casing.

17. A sound-deadening cabinet for a machine comprising a typewriter, a computer beneath the typewriter and controllable thereby, computer-mperating mechanisms whereby said machine may be supported upon a stand, said cabinet compris ng a main casing for said typewriter and computer, and an auxiliary casing for said mechanisms, said auxiliary casing being supported upon said supporting lugs and said main casing resting upon said auxiliary casing. I

18. A sound-deadening cabinet for a machine comprising a typewriter, a computer beneath the typewriter and controllable thereby, computer-operating mechanisms beneath said computer, and suporting lugs whereby said machine I may be supported upon a stand, said cabinet comprising a main casing for said typewriter and computer, and an auxiliary casing for said mechanisms, said auxiliary casing haying cut-out portions for receiving said supporting lugs and being formed of sections so that it may be assembled around said lugs without detaching the lugs from the stand, said main casing resting upon said auxiliary casing.

19. A sound-deadening cabinet for a machine comprising a typewriter, a computer beneath the typewriter and controllable thereby, computer-operating mechanisms beneath said computer, and supporting lugs whereby said machine may be supported upon a stand, said cabinet comprising a main casing for said typewriter and computer, an auxiliary casing for said mechanisms, said auxiliary casing resting upon said supporting lugs, said main casing resting upon said auxiliary casing, means for positioning said auxiliary casing with respect to the machine, and means for positioning the main casing with respect to the auxiliary casing.

20. A sound-deadening cabinet for a machine comprising a typewriter, a computerbeneath the typewriter and controllable thereby, computer-operating mechanisms beneath said computer, and supporting lugs whereby said machine may be supported upon a. stand, said cabinet comprising a main casing for said typewriter and coniputer, an auxiliary casing for said mechanisms, said auxiliary casing resting upon said supporting lugs, said main casing resti'ng upon said auxiliary casing, means for positioning said auxiliary casing with respect to the machine, comprising abutments carried by said auxiliarycasing and engaging said machine, and means for positioning said main casing with respect to the auxiliary casing, comprising hooks on said auxiliary casing for engaging said main casing. 21. A sound-deadening assemblage for a n'iachine comprising a typewriter having a keyboard, a typewriter-controlled computer beneath the typewriter and having at the front a register extending beyond the front of the typewriter, and computer-operating mechanism under said computer, said as-' semblage comprising a. cabinet having an upper section with a front wall having a cutout through whlch the keyboard and register project, and a lower section having a ceiling with an opening through which the forward part of the computer extends, and a sounddeadening lining for the part of the computer projecting from said cabinet.

22. A sound deadening assemblage for a machine comprising a typewriter having a keyboard and a key-lever comb at the rear of the keybb'ard, a typewriter-controlled computer beneath the typewriter and having at the front a register extending beyond the front of the typewriter, and computer-operating mechanism under said computer, said assemblage comprising a cabinet having an upper section with a front wall having a cutout through which the keyboardand register project, and a lower section having a ceiling with'an opening through which the forward part of the computer extends, a sound-deadening lining for the part of the computer projecting from said cabinet, and a sheet of sound-deadening material extending upwardly from said sound-deadening lining to engage the lower part of said comb.

:23. A sound :leadening cabinet for a. machine comprising a typewriter, a computer beneath the typewriter and controllable thereby, comptiter-operating mechanisms beneath said computer, and supporting lugs whereby said machine may be supported upon a stand, said cabinet comprising a casing for enclosing said operating mechanisms, said casing comprising a body-part and a cover-part, the cover-part being supported by said lugs and having an opening to per- 'mit the passage of the computer therethrough, and said body-part being mounted on said cover-part.

2%. A sounddeadening cabinet for a machine comprising a typewriter, a computer beneath the typewriter and controllable thereby, compLiter-operating mechanisms beneath said computer, and supporting lugs whereby said machine may be supported upon a stand, said cabinet comp-rising a cas ing enclosing the operating mechanisms beneath said computer, said casing comprising a body-part, a coverpart, said cover-part being supported upon said lugs and having an opening to permit the passage of the coinputer therethrough, the upper edges of said body-part overlapping the lower edges of said cover-part, and fastening means passing through the overlapping edges to, mount said body part on the cover-part.

25. A sound-deadening cabinet for enclosing the noise-producing parts of a ma.- chine coniprising a typewriter, a computer beneath the typewriter and controllable thereby, and. computer-operating mechanisms beneath said computer, said cabinet comprising a casing for enclosing the operating mechanisms beneath said computer and comprising a body-part and a coverpart having an opening to permit the passage of the computer therethrough, means for supporting said cover-part upon said machine, and means for supporting said body-part on said cover-part.

26. A sound-deadening cabinet for enclosing the noise-producing parts of a machine comprising a typewriter, a computer beneath the typewriter and controllable thereby, a base for said computer, and computeroperating mechanisms beneath said base, said cabinet comprising a casing for enclosing said operating mechanisms and comprising a body-part, a cover-part having an 1 mechanisms, means for supporting said cover-part upon said base, means for upporting said body-part on said cover-part, and means for positioning said cover-part relatively to said machine comprising abutmen-ts carried by said cover-part for engaging said base. a

27. A sound-deadening cabinet for a ma chine comprising a. typewriter, a computer beneath the typewriter and controllable thereby, and computer-operating mechanisms beneath said computer, said cabinet comprising a main casing for enclosing the typewriter and computer, an auxiliary casing for enclosing the operating mechanisms, said auxiliary casing comprising a body-part and a cover-part cut away to permit a connection to be established between the computer and the operatingmechanisms, means for supporting said cover-part upon said machine, means for supporting said bodypart on said cover-part, means for position in said cover-part relatively to said machme, and means carried by said cover-part and engaging said main casing for positioning said main casing relatively to said auxiliary casing.

28. A sound-deadening cabinet for a machine comprising a typewriter, a typewriter controlled computer beneath said typewriter, and controller-operating mechanisms beneath said computer, said cabinet compris ing a main casing for enclosing the typewriter and the computer, an auxiliary casing enclosing the operating mechanisms beneath said computer and comprising a bodypart and a cover-part, means for supporting said cover-part upon said machine, means for supporting said body-part on said coverpart, and means for positioning said coverpart relatively to said machine, said main casing having flanges whereby said main casing rests upon said auxiliary casing, and devices carried by said cover-part and en gaging said flanges for positioning said main casing relatively to said auxiliary casing.

29. A sound-deadening cabinet for a machine comprising a typewriter, a typewritercontrolled computer beneath the typewriter, and operating mechanism beneath the computer and including a motor, means for connecting the motor to the computer, an upwardly-extending handle to control said connecting means, and a conductor to supply current to the motor, said cabinet comprising a casing for said operating mechanism having an opening in the bottom thereof to ac cornmodate said conductor, and an opening at each side of the conductor opening to permit access to the operating mechanism,

covers for the side openings, one of th side covers having a slot to receive said handle, and means to seal said slot around the handle.

30. sound-deadening cabinet for enclosthe noiseeproducing'parts of a computing machine, said machine having a typewriter portion, a computer portion, and various operating mechanisms beneath said computer portion, said cabinet comprising a casing ior enclosing the operating mechanisms beneath said computer portion, said casing comprising a body-part and a coverpart, said cover-part having an opening therein to permit the passage of the computer portion therethrough, said body-part being mounted on said cover-part.

31. A sound-deadening cabinet for enclosing the noise-producing parts of a computing machine, said machine having a typewriter portion, a computer portion, and various operating mechanisms beneath said computer portion, said cabinet comprising a casing for enclosing the operating mechanisms beneath said computer portion, said casing comprising a body-part and a coverpart, said cover-part being formed of sections which can be applied to the machine from opposite directions, said sections when applied to the machine forming an opening in which said computer portion is positioned.

32. A sound-deadening cabinet for enclosing the noise-producing parts of a computing machine, said machine having a typewriter portion, a computer portion, and various operating mechanisms beneath said computer portion, said cabinet comprising a casing for enclosing the operating mechanisms beneath said computer portion, said casing comprising a body-part and a coverpart, said cover-part being formed of sections which can be applied to the machine from opposite diiections, said sections when applied to the machine forming an opening in which said computer portion is positioned, means for fastening said sections together, and means for mounting said body-part on said sections.

33. A sound-deadening cabinet for enclosing the noise-producing parts of a computing machine, said machine having a typewriter portion, a computer portion, and various'operating mechanisms beneath said computer portion, said cabinet comprising a casing for enclosing the operating mecha nisms beneath said computer portion, said casing comprising a body-part and a coverpart, said cover-part being formed of a forward section and a rearward section, which are applied to the machine from the front and rear, respectively, said sections when ap plied to the machine forming an opening in which said computer port-ion is positioned.

84. A sound-deadening cabinet for enclossing the noise-producing parts of a computing machine, said machine having a typewriter portion, a computer portion, and various operating mechanisms beneath said computer portion, said cabinet comprising a casing for enclosing theoperatlng mechanisms beneath said computer portion, said casing comprising a body-part and a coverpart, said cover-part being formed of a forward section and a rearward section, which are applied to the machine from the front and rear, respectively, said sections when applied to the machine forming an opening in which said computer portion is positioned, said sections having overlapping portions, and fastening means passing through said overlapping portions.

35. A sound-deadening cabinet for on closing the noise-producing parts of a computing machine, said machine having a type writer portion, a computer portion, and various operating mechanisms beneath said computer portion, said cabinet comprising a casing for enclosing the operating mechanisms beneath said computer portion, said casing comprising a body-part and a coverpart, said cover-part being formed of a forward section and a rearward section, which are applied to the machine from the front and rear, respectively, said sections when applied to the machine forming an opening in which said computer portion is positioned, said sections having overlapping portions, said body-part having portions overlapping said sections, and fastening means passing through said overlapping portions.

36. A sound-deadening cabinet for a computing machine, said machine having a typewriter portion, a computer portion, various operating mechanisms beneath said computer portion, a stand, and supporting lugs whereby said machine may be supported upon said stand, said stand being open from front to rear, said cabinet comprising a casing for enclosing the mechanisms beneath the computer portion, said casing comprising a body-part and a coverpart, said cover-part being supported upon said lugs, said body-part being of a size to permit it tobe applied to said cover-part by inserting it into the opening in the stand.

37 A. sound-deadening cabinet for a computing machine, said machine having a typewriter portion, a computer portion, various operating mechanisms beneath said com.- puter portion, a stand, and supporting lugs whereby said machine may be supported up on said stand, said stand being open from front to rear, said cabinet comprising a casing for enclosing the mechanisms beneath said computer portion, said casing comprising a body-part and a cover-part, said cover part having an opening therein large enough to permit passage of the computer portion therethrough said cover-part being supported upon said lugs, said body-part being applied to said cover-part by inserting it into the front'of the opening in said stand and moving it rearwardly therein.

38. The combination with a combined typewriting and computing machine having a typewriter with a keyboard, a computer, computer-operating mechanism under said computer, a support on which said computer rests and below which said mechanism is supported, and a signal to indicate the state of the computer, of sound-deadening means comprising a lower casing having a top surrounding the base of the computer and overlying said support to be supported thereby and a bottom beneath said mechanism and connected with said top, and an upper casingcomprising a body having back and side walls resting on the top of the lower casing and enclosing the rear and sides of g the typewriter and the computer, a detach able front wall to close the front of the body around the keyboard and the front part of the computer and resting on the top of the lower casing, said front wall having a window through which the signal may be .so i

puter beneath said typewriter, a computer case, said sound-deadening means comprising a casing having an opening through which the forward ends of said key-levers and the forward end of the computer case are exposed, and a layer of sound-deadening material for closing the space between the typewriter and the computer case, saidlayer extending from said case to said comb-plate.

40. Sound-deadening means for amachine comprising a typewriter having a keyboard and key-levers beneath said keyboard, a computer beneath said typewriter, and a computer case having a plurality of openings through which computer-operating devices extend to the exterior thereof, said sound-deadening means including a casing through which the keyboard and the for ward part of the computer case project, a layer of sound-deadening material within said computer case for closing said openings, and an upward extension of said layer for closing said space between the typewriter and the computer case and around the key-levers beneath the keyboard.

41. In combination with a machine of the class described, said machine comprising a typewriter section, a computer section, actuating means for the computer section, and various finger-pieces on said machine, and

means to enclose said machine, provision bemg made in said means to enable the various finger-pieces to be actuated from the exterior of the enclosing means.

42. Enclosing means for amachine of the class described, said machine comprising a typewriter section, a computer section under the typewriter section, and driving means under the computer section, said enclosing means comprising a sound-deadening casing to enclose the typewriter section and the computer section, a sound-deadening casing to enclose the driving means, and means to locate the casings relat1vely to each other.

44. A sound-deadening cabinet for a ma.

chine of the class described, said machine comprising a typewriter section, a computer section under the typewriter section, and

' actuating means under the computer section,

said cabinet comprising a casing to enclose the typewriter section and the computer section, .a casing to enclose the actuating means, and means to locate the cabinet relatively to the machine.

45. A sound deadening cabinet for a machine of the class described, said machine comprising a typewritersection, a computer section under the typewriter section, and

driving means under the computer section,

said cabinet comprising a casing to enclose the typewriter section and the computer section, a casing to enclose the driving means, means to locate the second-named casing relatively to the computer section, and means to locate the first-named casing relatively to the second-named casing.

46. The combination with a machine of the class described comprising a computer section having register-actuating mechanism, an operating handle by which said actuating mechanism may be operated, a motor by which said actuating mechanism may be operated, and means including a finger-piece to disconnect the motor from. said actuating mechanism when the latter is to be operated by said handle, of a sound deadening cabinet for s id machine having a slot through which s: finger-piece may project to the exterior thereof, and so constructed that, in assembling the cabinet around the machine, the part containing the slot may readily be placed over said fingerpiece.

47 A sound-deadening cabinet for a machine of the class described comprising typewritmg mechamsm having a keyboard and computing mechanism including a registelocated at the front of the keyboard, said computer cabinet being provided with an opening through which the keyboard and th regis ter extend and with means for effecting proper relative positioning between the machine and the cabinet.

48. A sound-deadening cabinet for a machine of the class described, said machine comprising typewriting mechanism having a keyboard section and a register located at the front of the keyboard, said cabinetcomprising an upper section having a front wall and a lower section having a ceiling, said cabinet having an opening formed by a cutout at the lower part of the front wall of the upper section and a cut-out at the forward part of the ceiling of the lower section, the register and the keyboard section of the machine entending through said opening.

, 49. A sound-deadening cabinet for a machine of the class described, said machine comprising a typewriter portion including a keyboard section, a computer portion having a register at the front thereof, said computer portion being arranged under the typewrite portion,and mechanism under the portion, said cabinet comprising an upper section and a lower section, the upper section having a front wall, the latter having a cut-out through which the keyboard section and the register may extend, said lower section having a. ceiling, the -ceiling having an opening therein through which the forward partof the computer section may extend, and means to support said cabinet on the machine.

50. The combination with a computer settable to addition or subtraction, and a com puter-controll1ng typewriter thereon hav-- ing an addition-subtraction signal displayed at one point, of sound-deadening means comprising a casing for the typewriter having a window through which the typing may be observed and a separate small window independent of the first-named window as to permit the signal to be observed therethrough.

51. The combination with a typewriter and sound-deadening means therefor, of a computer having a case supporting said typewriter and having operative connections with the typewriter, means for deadening the sound of the computer comprising a layer of sound-deadening material between the typewriter and the computer provided with openings to accommodate said connections, the layer of sound-deadening material having slots to register with the openings in the computer, and a sound-deadening casing for a portion of said computer.

52. The combination with a combined typewriting and computing machine having typewriter with a keyboard, a computer, compnter operating mechanism under said computer, and a stand for said computer, of sound-deadening means comprising a lower casing open at the top to fit around the base of the computer and enclosing said mechanism, said lower casing being supported by said stand, and an upper sound-deadening casing for said typewriter and said computer.

53. The combination of a typewriting machine, a support upon which saidmachine stands, motor-driving means under said support, and sound-subduing means enclosing said typewriting machine and said 1110- tor-driving means, said enclosing means including a pan-shaped bottom closure mounted under said support.

54. The combination of a typevvriting machine, a support upon which said machine stands, motor-driving means under said support, and sound-subduing means enclosing said typewriting machine and said motordriving means, said enclosing means including a pan-shaped bottom closure mounted under said support, said bottom closure having an opening to give access to the motor and a cover to close said openin 55. The combination of a typevvriting machine, a stand to support said machine, said stand having a top to carry said machine, and having legs to support said top, means connecting said top and said legs, and a sound-deadening casing enclosing said type- Writing machine and said top, and including a bottom closure beneath said top, said bottom closure having openings through which extend the connections between the top and the legs. 7

JOHN WALDHEIM. 

